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Répartition des espèces

806 record(s)

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OGC:WMS (1)

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From 1 - 10 / 806

Species and habitats - Limanda limanda (Common Dab) - Immature - Potential habitat in October modelled by Quantile Regression and its uncertainty with CGFS data

Modelised abundance of species or prediction uncertainty.
Species and habitats - Callionymidae - All ages - Multi-annual abundance in October during CGFS (1988-2009)

Biologic data have been expressed in abundance (numbers or density values (nbr/km²)) and always required to be log-transformed using a log10(x+1) transformation.
Species and habitats - Callionymidae - Eggs - Abundance in January (IBTS survey 2007)

Biological data have been expressed in abundance (number of individuals per 20 m3).
Species and habitats - Gadus morhua - Eggs - Preferential habitat in January modellised by Generalised Linear Modelling and its uncertainty for IBTS surveys

Modelised adundance of several species eggs or prediction uncertainty.
Species and habitats - Pleuronectes platessa - Immature - Mean abundance in October, standard deviation maps during CGFS (1988-2009)

Biologic data have been expressed in abundance (numbers or density values (nbr/km²)) and always required to be log-transformed using a log10(x+1) transformation. Abundance mean (mean) and standard deviation (st) have been calculated.
Species and habitats - Aequipecten opercularis - Multi-annual Abundance in October - CGFS (2007-2009)

Biologic data have been expressed in abundance (numbers or density values (nbr/km²)) and always required to be log-transformed using a log10(x+1) transformation.
Species and habitats - Gadus morhua - All ages - Preferential habitat in October modelled by Generalised Linear Modelling and its uncertainty with CGFS data

Modelised abundance of species or prediction uncertainty.
Species and habitats - Scomber scombrus - All ages - Multi-annual abundance Kriging error maps during CGFS (1989-2006)

Biologic data have been expressed in abundance (numbers or density values (nbr/km²)) and always required to be log-transformed using a log10(x+1) transformation. Abundance mean (mean) and standard deviation (st) have been calculated. The sum of the kriging error for each yearly kriged abundance fits to the kriging error (v).
Species and habitats - Limanda limanda - Mature - IBTS annual abundance in January (1980-2010)

Biologic data have been expressed in abundance (numbers or density values (nbr/km²)) and always required to be log-transformed using a log10(x+1) transformation.
Species and habitats - Hyas - Presence probability (2006-2012)

Abundances were recoded in term of presence-absence. Geostatistical interpolation : the spatial variation of biological data were analysed using GENSTAT (GENSTAT 7 Committee, 2004), which is a GENeral STATistics package including the main geostatistical tools. It computes experimentala variograms, fits these with various authorised mathematical models and uses them to calculate kriged estimates on a fine regular grid (of latitudes and longitudes). The grid of points was imported into ArcMap and interpolated with the Spatial Analyst extension in order to create a continuous raster of 1 km² resolution. The resulting maps illustrate the spatial distributions and the variations over time for biological data studied in CHARM's area. For legends of maps, approximates of the 5th and the 95th quantiles were used for the minimales and maximales values respectively.